PJ
Peter Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Day-County, South Dakota
Our Model Tree links this Peter Johnson across the 1920, 1930 and 1940 US Censuses in Day-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 7-person household.
Age 58
b. ~1882
Male
Head
Born: Norway
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Day-County, South Dakota |
| Surname | Johnson |
| Given Name | Peter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Roslyn Town |
| 1935 Residence (County) | Day |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Blacksmith |
| Industry | Blacksmith Shop |
| Class of Worker | OA |
| Hours Worked | 25 |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Occupation | Blacksmith |
| Township / Ward | Roslyn Town |
| Est. Birth Year | ~1882 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Peter | Age | Birth yr |
|---|---|---|---|---|
| Helen Johnson | Daughter | — | 15 | ~1925 |
| Opal Johnson | Daughter | — | 12 | ~1928 |
| Peter Johnson | Head | — | 58 | ~1882 |
| Kenneth Johnson | Son | — | 4 | ~1936 |
| Sherman Johnson | Son | — | 22 | ~1918 |
| Palmer Johnson | Son | — | 8 | ~1932 |
| Edna Johnson | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Sargent, North …
Head, age 37
Sargent, North Dakota · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Peter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1902 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Blacksmith |
| Industry | Own Shop |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Norway |
| Year of Naturalization | 1916 |
| Birthplace (normalized) | norway |
1930
Day, South …
Head, age 48
Day, South Dakota · implied b. ~1882 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Peter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Norway |
| Naturalization Status | Naturalized |
| Year of Immigration | 1903 |
| Age at First Marriage | 30 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Blacksmith |
| Industry | Blacksmith Shop |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | H |
| Home Value / Rent | 1800 |
| Radio Set | R |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1940
Day-County, South …
Head, age 58
Day-County, South Dakota · implied b. ~1882 — 7 household members
| Surname | Johnson |
| Given Name | Peter |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Roslyn Town |
| 1935 Residence (County) | Day |
| Naturalization Status | Naturalized |
| Occupation | Blacksmith |
| Industry | Blacksmith Shop |
| Class of Worker | OA |
| Hours Worked | 25 |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Peter Johnson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Peter Johnson
Head · 1940 · age 58 · b. ~1882 · South Dakota
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Day-County, South Dakota
Open full size
1940 US Federal Census — Day-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03854-00263)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold H. Beverly | 48 | Head | Telegrapher | Iowa |
| 2 | Cora B. Beverly | 43 | Wife | — | Iowa |
| 3 | Eleanor F. Beverly | 19 | Daughter | — | S. Dakota |
| 4 | William A. Beverly | 18 | Son | — | S. Dakota |
| 5 | Ralph H. Beverly | 14 | Son | — | Minnesota |
| 6 | James F. Beverly | 6 | Son | — | S. Dakota |
| 7 | Stien K. Ilianson | 70 | Head | Grain Buyer | Minnesota |
| 8 | Peter Johnson THIS PERSON | 58 | Head | Blacksmith | Norway |
| 9 | Edna Johnson | 49 | Wife | — | Norway |
| 10 | Sherman A. Johnson | 22 | Son | Mechanic | S. Dakota |
| 11 | Helen J. Johnson | 15 | Daughter | — | S. Dakota |
| 12 | Opal M. Johnson | 12 | Daughter | — | S. Dakota |
| 13 | Palmer E. Johnson | 8 | Son | — | S. Dakota |
| 14 | Kenneth E. Johnson | 4 | Son | — | S. Dakota |
| 15 | Christian O. Cornelius | 72 | Head | — | Norway |
| 16 | Anna V. Cornelius | 73 | Wife | — | Norway |
| 17 | Percy C. Peterson | 13 | Grand Son | — | S. Dakota |
| 18 | Mari Amundson | 82 | Head | — | Norway |
| 19 | Knut E. Strand | 69 | Head | — | Norway |
| 20 | Christine Strand | 71 | Wife | — | Minnesota |
| 21 | Henry E. Olson | 51 | Head | — | Norway |
| 22 | Mina A. Olson | 42 | Wife | — | S. Dakota |
| 23 | Raymond O. Olson | 19 | Son | Helper | S. Dakota |
| 24 | Delores H. Olson | 17 | Daughter | — | S. Dakota |
| 25 | Arvid H. Olson | 13 | Son | — | S. Dakota |
| 26 | Harlan M. Olson | 12 | Son | — | S. Dakota |
| 27 | Conrad P. Kgnsvig | 46 | Head | Proprietor | S. Dakota |
| 28 | Hannah H. Kgnsvig | 47 | Wife | — | S. Dakota |
| 29 | Robert D. Kgnsvig | 9 | Son | — | S. Dakota |
| 30 | Theodore P. Farmen | 51 | Head | Truck Driver | S. Dakota |
| 31 | Mathilda Farmen | 49 | Wife | — | S. Dakota |
| 32 | Roland Farmen | 18 | Son | Laborer | S. Dakota |
| 33 | Hartney Farmen | 9 | Son | — | S. Dakota |
| 34 | Ottar Ronshaugen | 51 | Head | Mechanic | Norway |
| 35 | Clayton D. Ronshaugen | 8 | Son | — | S. Dakota |
| 36 | Gina A. Jacobson | 43 | Servant | House Keeper | S. Dakota |
| 37 | Hilda M. Bakken | 48 | Head | Postmaster | S. Dakota |
| 38 | Thina N. Bakken | 54 | Sister | — | S. Dakota |
| 39 | Harmon P. Bakken | 17 | Nephew | Helper | S. Dakota |
| 40 | Elmer Nerland | 35 | Head | Hot Lunch Unit | S. Dakota |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)